889568641 has 4 divisors (see below), whose sum is σ = 957997012. Its totient is φ = 821140272.

The previous prime is 889568629. The next prime is 889568651. The reversal of 889568641 is 146865988.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 411927616 + 477641025 = 20296^2 + 21855^2 .

It is a cyclic number.

It is not a de Polignac number, because 889568641 - 2²³ = 881180033 is a prime.

It is a super-3 number, since 3×889568641³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (889568621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34214166 + ... + 34214191.

It is an arithmetic number, because the mean of its divisors is an integer number (239499253).

Almost surely, 2^889568641 is an apocalyptic number.

It is an amenable number.

889568641 is a deficient number, since it is larger than the sum of its proper divisors (68428371).

889568641 is a wasteful number, since it uses less digits than its factorization.

889568641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68428370.

The product of its digits is 3317760, while the sum is 55.

The square root of 889568641 is about 29825.6373108774. The cubic root of 889568641 is about 961.7447441364.

The spelling of 889568641 in words is "eight hundred eighty-nine million, five hundred sixty-eight thousand, six hundred forty-one".